Tire-casing.



n. J. DEMAS.

TIRE CAStNG.

APPLICATION FILED JAN. 14. 1919,

Patented Apr. 2, 1918.

zlwue'n for attorney DEME'IREOS J. DEMAS, 0F PITTSBURGH, PENNSYLVANIA.

TIRE-CASING.

Specification of Letters Patent.

Patented Apr. 2, i918.

Application filed January 14, 1918. Seria1.No.211,85B.

To all whom it may concern:

Be it known that I, DEMETKEOS J. Dnaras, a citizen of the United States,residing at Pittsburgh, in the county of Alleglwny and State ofPennsylvania, have ii'ii'auitcd certain new and useful Improvemems inTire- Casings, of which the following a specification.

My invention relates to improvements in tire casings or shoes, of theinternal armor type.

An important object of the invention is to provide a tire casing or shoeof the above mentioned character, which is strong, durable, and punctureproof to a high'degrec.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawing forming a part of this specification, thefigure is a transverse sectional view through a tire casing or shoeembodying my invention. 7,

In the drawing, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral 1 designates aplurality of layers of fabric coated with rubber, and constituting thebody portion of the casing. The layers of fabric 1 are extended or bentabout heels 2, as shown.

Arranged upon the outermost strip 1, is a strip 3, which I term abreaker. This breaker is formed of rubber having a cord 4 or otherfibrous material embedded therein. Arranged upon the breaker 3 is astrip or layer of rubber 5, having a strip or layer of fiber 6, disposedthereon. Disposed upon the fiber 6 is a strip or layer of rubber 8,having a strip or layer of fiber 9 arranged thereon. Arranged upon thestrip or layer of fiber 9 is a strip or layer 10 of rubber, receivingthereon a layer ll of rubber constituting the tread portion of thecasing. The fiber employed in the construction of my tire casing is thecomposition ordinarily termed fiber and used principally as insulatingmaterial. This fiber is strong, tough, and when formed in thin sheetspossesses a desired degree of flexibility. The strips or layers of fiberare preferably provided with openings 12, in order that the material ofthe layers of rubber may pass therethrough, during the process ofvulcanization, so that all portions of the tire casing form in effect asingle unit.

The numeral 13 designates a strip or layer of wire fabric, such as acopper wire fabric. This wire fabric is embedded within the treadportion 11 and is arranged outwardly of the layers of rubber and fabric,serving to protect the same and imparting strength to the treadport-ion.

When the several layers or strips constituting the tire casing areassembled and secured together, it is obvious that the entire unit issuitably vulcanized, whereby the several strips become securely united,forming in effect an integral structure. The openings 12 in the fiberstrips or layers allow of the material of the rubber strips passingtherethrough, thus serving to secure the strips directly together. Thefiber strips also become securely cemented or vulcanized to the rubberlayers orstrips.

From the foregoing description it is believed that the construction ofmy tire casis deemed necessary.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatyarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of the invention or thescope of the sub joined claim.

aving thus described my invention, 1 claim:

A tire casing comprising a plurality of layers of rubberroated fabricsecured togcther and arranged l'llIlOlll'lOSt for constituting the bodyportion of the casii'ig, a breaker strip arranged upon the outer surfaceof the outermost strip of fabric, a layer oi rubber arranged upon theouter surface oi the breaker, a layer of fiber arranged upon the outersur face of the layer of rubher and having openings formed therein, alayer of rubber disposed upon the outersurmg is obvious and no furtherexplanation Lee 1,261,013

face of the fiber, a Iayer'of fiber arranged In testimony whereof Iaflix my signatur upon the outer surface of the second named 1n presenceof two witnesses layer of rubber, a layer of rubber arranged upon theouter surface of the second named 'DEMETBEOS A layer of fiber, and ametallic fabric em- Witnesses:

bedged Within the last named layer of D. K. FERREE,

rub er.

J AMEs P. KIRK.

